Printer, printing head kit and printing head fixing assembly

The utility model discloses a printer, a printing head kit and a printing head fixing assembly. The printer comprises an upper cover mechanism and a base mechanism. The upper cover mechanism comprisesa printing head suite. The printing head suite comprises a fixing frame, a printing head module and an elastic abutting piece. The printing head module and the elastic pressing piece are fixed to anupper cover body of the upper cover mechanism through a fixing frame. And the base mechanism is provided with a pressing roller. When the upper cover mechanism is arranged above the base mechanism ina covering mode, the printing head module is correspondingly located above the abutting roller, a medium material to be printed is located between the printing head module and the abutting roller, atleast one part of the elastic abutting piece abuts against the abutting roller, and the elastic abutting piece correspondingly generates elastic restoring force. Through the design of the elastic pressing piece, the fixing frame